Ambkose mathews



(modem A. MATHEWS. Pump. No. 237,886. Patente d Fb. 15,1881. 74 a 22 INVENTOR v v mafi' em ATTORNEYS.

N.iETERS. PHOTO-L|THCGRAPNER, WASHINGTON n C.

FFIQEO PAT NT AMBROSE MATHEWS, OF KEWANEE, ILLINOIS.

PUMP.

SPECIFICATION forming part of Letters Patent No. 237,886, dated February 15, 1881.

Application filed July 22, 1880.

To all whom it may concern Be it known that I, AMBROSE MATHEWS, oi Kewanee, in the county of Henry and State of Illinois, have invented a new and Improved Pump, of which the following is a specification.

This invention relates to that class of submerged pumps that are designed for forcing water to very considerable heights; and it consists of a stem-valve and spring-actuated hollow bail plunger or piston, working in a close-bottomed cylinder, apd so arranged that on the upstroke the valve lifts above the piston and admits water to enter the top of the cylinder and flow into and below the piston, while on the downstroke the valve closes down in the top of the piston, so that they act together as a solid piston in forcing water.

Figure 1 is a side elevation of the device. Fig. 2 is a sectional side elevation of the same. Fig. 3 is a rear elevation of the pump-cylinder, showing face of exit-valve. Fig. 4 is a cross-section on line 00 m, Fig. 2. Fig. 5 is a plan of the reverse of the piston and valve.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the standpipe, which may have one or more pump-cylinders connected with it working with alternate strokes.

B represents an upright pump-cylinder, preferably made in one casting with its lateral exit-pipe B, said cylinder B being closed at the bottom and open at the top, and being provided at the top with a horizontal brace, 0, extending as far as and parallel with the exit-pipe B, and resting against the standpipe A, and serving, in combination with the brace-rods B and cross-bars B, that embrace botli' cylinder B and stand-pipe A to steady said cylinder B in position.

D is the piston rod or stem, moving verticallyin the guide-block A, which projects laterally from the stand-pipe A, and having the pump-spear D rigidly secured in its lower forked end by bolts and nuts a (t. This pumpspear D has a shoulder or bolster, b, formed on it just below the lower end of the pump stem or rod D, and another shoulder, c, at about half its length, and has its end screwthreaded, as shown at d.

E is a cylindrical hollow piston or plunger,

(No model.)

open at both top and bottom, andfitting closely in the cylinder B, and provided with a crossbar, f, across its bottom, and an interior annular flange, g, at its top. Said piston E is also provided-with a bail, E, and is held in place by thepump-spearD,that passes down through the bail E, and by the screw G, that is entered upward through the cross-bar f into the end of the pump-spear D, and by a spiral spring, H, whichencircles said screw G between the head thereof and the cross-bar f, the object of said spring H being to hold said piston E up in place with the bail E against the shoulder b of the pump-spear D, and with the top of said piston E firmly against and closed by the valveI; and a further object of said spring H is to prevent the jarring and thumping of the piston E when the pump is in operation.

The circular valve I is set upon the pumpspear D just below the shoulder o, and is held immovably in place by screwing a nut, m, up against the under side thereof. In the exitpipe B is an ordinary flap-valve, K, fixed on an incline and opening outward and upward into the bore A of the stand-pipe A.

When this pump is submerged and in operation the upstroke of the piston rod D lifts and holds the valve I clear from its seat upon the piston E, said piston E being held down, compressing the spring H by the pressure of the water entering the cylinder B, thereby permitting water to enter from the top and fill said cylinder B below the said valve I. On the downstroke of the said rod D the piston E 15 forced up, by the combined action of the spring H and the pressure of the water in said cylinder B, to meet the descending valve I and said valve I closing tight in the top of said piston E, the two move together at the downstroke as one solid piston and force the water out through the opening that is controlled by the valve K up through the stand-pipe A.

Submerged pumps ordinarily take Water in at the bottom of the cylinder, and consequently are very apt to take impure water and mud in from the bottom of the reservoir or river in which the pump is operating, while the cylinder herein shown and described takes water only at the top, and thereby takes and delivers a clearer and purer water-a matter of great importance for waterworks, factories, 85c.

2 zsmsse Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. A force-pump constructed substantially as herein shown and described, consisting of the cylinder B, closed at the bottom, open at the top, and provided with lateral exit B, pump-spear D, provided with fixed valve I, movable hollow piston E, and exit-valve K, as set forth.

2. In a force-pump, the combination, with the pump-spear D, prox ided with shoulder a and screw-thread d, of the fixed valve 1 and nut m, substantially as herein shown and described.

3. Inapuinp,thecombinatioinwith thepumpspear I) and fixed valve 1, of the hollow piston E, provided with bail E, cross-bar f, and annular flange g, screw G, and spiral spring I-I, substantially as herein shown, and for the 20 purpose described.

AMBROSE MATHEWS.

Witnesses:

J AMES WILEY, WILLIAM I. WILEY. 

